Leah decides to take off her clothes and watch TV while wearing only a diaper. Tina can’t forget that Leah has been diapered if her plan is to work. To her surprise, Leah actually finds herself enjoying and getting caught up in the baby and toddler shows.
Midway through the episode, however, Leah feels her eyelids grow heavy. Today has been busy and exhausting. So, she decides to take a nap. She crawls onto the couch and curls up. Her thumb heads for her mouth. She falls asleep sucking her thumb.
A short while later, Tina comes to fetch Leah for dinner. However, her teenage stepdaughter is nowhere to be seen. Instead, there’s a toddler in a diaper sleeping on the couch, sucking her thumb. It takes Tina a moment to realize that the toddler is actually Leah.
Unsure of what to do now, Tina picks Leah up. As she does so, there’s a soft hiss. Leah’s diaper turns yellow. Tina’s muscle memory takes over. She does what she would do for any toddler that just wet their diaper: she changes the diaper.
Leah sleeps through the diaper change. Still unsure, Tina waffles for a moment, before deciding to put Leah into the baby carrier she keeps in her car for work emergencies. For some reason, it doesn’t feel right to leave Leah on the couch or put her in her full-sized bed. In the baby carrier, Leah looks like an actual baby, not just a toddler. Tina places the baby carrier on the kitchen table and takes out her phone to call her husband about Leah’s behavior.
While Tina is on the phone, Leah wakes up. She’s disoriented briefly, before remembering her plan. Well, she’s in a baby carrier, so she must be doing well. She hears Tina talking on the phone.
“I don’t know what to do, Tim.” Leah’s eyes widen. Tim is her dad’s name. Tina must be talking to her dad. “At this point, she’s more baby than teen! Yes, she’s had multiple accidents today, it’s- I’m at my wit’s end. I’m seriously considering just enrolling her in daycare. If she does one more babyish thing-”
Hearing this, Leah seizes the moment to do the final step to get in daycare. She…